Polycarbonate Melting Point, Properties, Advantages, Disadvantages, Applications
| Material | Polycarbonate |
| Structure | Amorphous |
| Chemical Formula | C15H16O2 |
| Melting Point |
288-316 °C (550-600 °F)
|
| Young’s Modulus | 2.0–2.4 GPa |
| Specific Gravity | 1.19 |
| Tensile Strength | 59 MPa (8500 PSI) |
| Shrinkage |
0.6 – 0.9 % (.006 – .009 in/in
|
| Mold Temperature |
82 – 121 °C (180 – 250
|
| Service temperature |
140 °C (284 °F) at 0.46 MPa (66 PSI)
|
|
Heat Deflection Temperature
|
0.45 MPa: 140 °C (284 °F) 1.8 MPa: 128–138 °C (262–280 °F) |
| Flexural Strength |
93 MPa (13500 PSI)
|
| Density (ρ) | 1.20–1.22 g/cm3 |
| Compressive Strength | >80 MPa
|
Polycarbonate is a versatile thermoplastic polymer widely used in various applications due to its strength, toughness, and transparency. The melting point of polycarbonate is an important physical property that influences its processing, performance, and end-use applications.
Polycarbonate’s melting point is typically between 288°C to 316°C. For instance, the melting point of polycarbonate based on bisphenol A (PC-BPA) is approximately 265°C, while the same for polycarbonate based on bisphenol S (PC-BPS) is about 309°C.
These values may vary slightly depending on the specific polycarbonate resin and its formulation.
The melting point of polycarbonate depends on several factors, such as molecular weight, degree of crystallinity, and impurities. Polycarbonate, with a higher molecular weight and degree of crystallinity, generally has a higher melting point.
Impurities, conversely, can lower the melting point by disrupting its crystal structure.
Advantages
Durability: Polycarbonate is highly impact resistant and can withstand high stress and strain. Lightweight: Polycarbonate is lighter than glass, making it easy to handle and install.
Transparency: Polycarbonate is highly transparent, allowing for good visibility.
UV resistance: Polycarbonate has built-in UV protection that prevents yellowing and deterioration over time.
Fire resistance: Polycarbonate has high fire resistance, making it ideal for various applications.
Versatility: Polycarbonate can be molded into various shapes and sizes, making it suitable for various applications.
Disadvantages
Cost: Polycarbonate is more expensive than other plastic materials, such as PVC or acrylic plastic.
Scratching: Polycarbonate can scratch easily, making it less suitable for frequent cleaning applications.
Flammability: Polycarbonate can be flammable and may not be suitable for applications where fire safety is a concern.
Applications
Safety Glass: Polycarbonate is used as a safety glass substitute in cars, bulletproof windows, and security shields.
Electronics: Polycarbonate is used to manufacture electronic devices such as smartphones, laptops, and televisions.
Architecture: Polycarbonate is used for skylights, greenhouse panels, and exterior glazing applications in architecture.
Sports Equipment: Polycarbonate produces various sports equipment, such as hockey masks, football helmets, and lacrosse sticks.
Medical Devices: Polycarbonate is used to manufacture medical devices, including eye shields, protective face shields, and dental guards.
Conclusion
Polycarbonate melting point is an important physical property that affects its processing, performance, and end-use applications. Understanding the melting point of polycarbonate is crucial for selecting the appropriate polycarbonate resin for specific applications and optimizing the processing and performance of polycarbonate-based products.